The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Jun. 27, 1997
Mohan V Kalkunte, Sunnyvale, CA (US);
Ganatios Y Hanna, Fremont, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A network station transmitting on a half-duplex Ethernet (802.3) half-duplex media includes a delay credit counter that tracks a delay interval after transmission of a data packet to ensure the network station operates according to an assigned transmission rate. The delay credit counter is decremented by a delay count calculated based on the number of transmitted data bytes and the assigned rate of the network station, and incremented during non-transmitting (i.e., idle) intervals by the network station. The network station defers from transmitting on the half-duplex network media until the delay credit counter has a counter value greater than or equal to zero, resulting in a reduced number of collisions between network stations. In the event of a collision, a network station performs a modified collision mediation based upon the assigned bandwidth, where a range of slot times generated according to the truncated binary exponential backoff (TBEB) algorithm is divided into lower and upper integer ranges, where a network station having a greater assigned bandwidth has a greater probability of selecting the lower range of integers, resulting in a greater probability of winning collision mediation.